Database Backup

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Revision as of 03:17, 12 November 2010 by Bigfoot65 (talk | contribs) (→‎Tips)
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It's good practice to periodically backup up your database. This functionality is coming to Amahi soon, but until then there is a simple way to automatize it. This can be done using AutoMySQLBackup script.

Features

  • Backup multiple MySQL databases with one script. (Now able to backup ALL databases on a server easily. no longer need to specify each database separately)
  • Backup all databases to a single backup file or to a separate directory and file for each database.
  • Automatically compress the backup files to save disk space using either gzip or bzip2 compression.
  • Can backup remote MySQL servers to a central server.
  • Runs automatically using cron or can be run manually.
  • Can e-mail the backup log to any specified e-mail address instead of "root". (Great for hosted websites and databases).
  • Can email the compressed database backup files to the specified email address.
  • Can specify maximum size backup to email.
  • Can be set to run PRE and POST backup commands.
  • Choose which day of the week to run weekly backups.

What it does

  • Every day it will run mysqldump and gzip will dump your specified databases to the /var/hda/files/dbbackup/daily directory, it will rotate daily backups weekly so you should never have more than 7 backups in there.
  • Every Saturday it will again backup the databases you have chosen but they will be placed into /var/hda/files/dbbackup/weekly, these will be rotated every 5 weeks so there should never be more than 5 backups in there.
  • Every 1st of the month it will create a backup of all databases and place them into /var/hda/files/dbbackup/monthly. These will never be rotated so it will be up to you to do your own house keeping. I would suggest taking a copy of this offline every month or two so that if you have a hard drive failure you will be able to restore your database.

How to Install

  • Create a share called dbbackup.
  • Download the script to /tmp directory.
     cd /tmp
     wget http://downloads.sourceforge.net/project/automysqlbackup/AutoMySQLBackup/AutoMySQLBackup%20VER%202.5/automysqlbackup-2.5.1-01.sh
  • Some changes will need to be made for this to work on your HDA. As root user, update lines indicated in automysqlbackup-2.5.1-01.sh to read as follows:
     Line 39:  USERNAME=root
     Line 49:  PASSWORD=hda
     Line 51:  BACKUPDIR="/var/hda/files/dbbackup"
     Line 65:  MAILADDR="root"
     Line 76:  DBEXCLUDE="information_schema"
     Line 79:  CREATE_DATABASE=yes
     Line 94:  LATEST=yes
  • Rename and copy the automysqlbackup-2.5.1-01.sh from /tmp to /usr/bin and set the permissions:
     cd /usr/bin
     cp /tmp/automysqlbackup-2.5.1-01.sh automysqlbackup
     chmod 755 automysqlbackup
  • Set automysqlbackup as a daily cron job (Optional):
     cd /etc/cron.daily
     ln -s /usr/bin/automysqlbackup

Tips

  • This script is well documented. Options can be easily customized to meet your specific HDA requirements. The guidance can be found in the script file, starting at line 110.
  • To run anytime, as root do the following:
  automysqlbackup
  • To change day of week (1-7/defaults to 6=Saturday), change the number on the following line in automysqlbackup as root user:
 DOWEEKLY=6


NOTE: When it's run the first time, it will create the directory structure automatically if it does not already exist.